[Mr. Carlson] bought a Globe Scout Model 40A ham radio transmitter at a hamfest. The 40A was a grand old transmitter full of tubes, high voltage, and a giant transformer. It is really interesting to ...

The hydraulic telegraph, a telecommunications device invented by ancient Greeks, allowed the sending of long distance ...

ENOLA, Pa. (WHTM) — Viewers can watch abc27 online, via cable, via satellite, or via antenna. Those who watch the station with antennas may have noticed some changes since abc27’s transmitter was ...

The DJI Mic Mini uses an algorithm to makes sure the audio it picks up is good to use. It’s automatic limiting feature will lower the volume on its own if it detect audio input is too high. This can ...